Solution
Option 1 -> Introducing an incentive scheme directly links performance to rewards, effectively boosting employee motivation by recognizing and rewarding achievements.
Option 2 -> While salary increases can improve satisfaction, they don't specifically address motivation through performance-based recognition as mentioned in the context.
Option 3 -> Hiring more staff addresses workload issues but doesn't directly create a motivational system tied to employee performance.
Option 4 -> Reducing work hours may improve work-life balance but doesn't establish a direct motivational mechanism for performance improvement.
Hence, Option 1: By introducing an incentive scheme -> Rajesh improved employee motivation by implementing an incentive scheme that rewarded performance and achievement, creating a direct link between effort and rewards, which is a proven motivational strategy -> correct